CGS SCI-SIX

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CGS SCI-SIX

$1,050.00

The CGS Group SCI-SIX is a centerfire rifle silencer intended for use on semiautomatic and automatic 5.56x45mm host weapons, with no barrel length restrictions.  The silencer mounts to the host firearm with a flash hider mount that left hand threads to the silencer body. It has a 1.64 inch primary diameter and is 6.5 inches long with the mount installed. The main silencer body is constructed from 718 Inconel using additive manufacturing (DMLS 3D printing). The silencer weighs 17 ounces and with the included flash hider mount, the total system weight is 19.6ounces.  The included mount adds 1.125 inches.

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The primary considerations during the development of CGS’s SCI-Six Suppressor was gas, flash, and sound mitigation. CGS aimed to minimize the impact of adding a suppressor to a firearms operating system, minimize POI shift, and improve host firearm precision all while maintaining a minimal size envelope.

CGS manufacturing process creates parts with higher strength than billet, forgings, castings, or MIM, and does so with increased material density within the parts. There are no welds meaning there are no welds to fail or warp which would normally cause concentricity problems along the length of the barrel. The monolithic core structure and lack of welds make CGS rifle silencers very strong and eliminates failures, concentricity problems, and QC issues.

Utilizing the Hyperion VCD (Variable Core Diameter) design makes this silencer stronger than other comparative silencers by better controlling heat and pressure to prevent hot spots from forming. The first chamber is vented causing gas to flow forward and outward around the core allowing the gas to flow freely to lower pressure regions. Flow moving forward is vented around the first core section and is then reintroduced to the main flow further downstream. The exterior gas flowing around the cores also has an alternate path out of the suppressor through an array of peripheral vents in an optional vented front cap. These flow dynamics also help to reduce thermal signature as well as IR glow under nightvision.

The signature suppressor is retained on its muzzle device mount with a shallow taper joint interface which helps with retention as it provides much more grip than a square shoulder. Thanks to the additive manufacturing process, CGS was able to integrate new technologies into the SCI-SIX series. The much wider than average bore aperture and optional use of the peripheral vents combined assist with minimizing impact to host firearm as well as limiting toxic gases being blown back at the shooters face through the ejection port and other regions. The wide bore also virtually eliminates the potential for baffle or end cap strikes. The suppressor core features a 1.5″ hex feature and the front cap features a 7/8″ hex feature which allows easy installation and removal of front caps. While strikes are virtually eliminated, the front caps are easily replaceable with a wrench without any negative effects in any aspect if the need for replacement due to a strikes does arise.

Technical Specifications:

  • Length: 5.9″
  • Diameter: 1.68″
  • Weight: 17.1oz
  • Material: 718 Inconel
  • Finish: DLC

What’s in the Box:

  • CGS SCI-Six Suppressor
  • Owners Manual

What is the difference between a suppressor and a silencer?

There is no difference; these are just different words for the same thing. The word “silencer” is the legal term; but, either “sound suppressor”, or just “suppressor”, is more technically accurate since they don’t actually silence the firearm. You can use either term with us and we’ll promise not to care.

What does a suppressor do?

How a suppressor works is by dramatically reducing a gunshot noise by slowing the decompression of hot, high-pressure gasses. A firearm suppressor creates a controlled environment in which these gases expand and cool before they make contact with ambient air. Imagine untying a balloon instead of popping it, or slowly removing the champagne cork just enough for gas to vent in a slow and steady fashion: you would hear a hiss instead of a pop.

Is it legal to own a silencer?

Under federal law, it has never been illegal to own a silencer. If it is legal for you to buy a handgun, and you live in a state that allows suppressor ownership, then it is probably legal for you to own a silencer. The basic requirements are as follows:
  • You must be at least 21 years old
  • You must live in a state that allows ownership
  • You must not have any felony convictions

Do I need a special license to own a silencer?

No! There are some rumors that you need to have a “Class 3” license to own a silencer, but this simply isn’t true. You do have to pay for a “tax stamp” when you first buy the suppressor – but there are no ongoing fees or licenses required. This tax is similar to paying sales tax on a purchase, except that it goes to the federal instead of the state government.

Do silencers work?

Yes, silencers are an effective way to provide hearing protection, with most models providing as much or more sound reduction in decibels (dB) as the most effective over- or in-ear sound protection. Instead of blocking out the sound at your ear, you’re blocking the sound at the muzzle. Silencers give the gas of the gunshot ample space to expand, while using various means to slow down, trap, and redirect the gasses inside so they’ve dropped as much pressure and temperature as possible when the gases exit the muzzle. Attaching a silencer to your firearm is a substantial improvement when you’re hunting, target shooting, or otherwise engaging with your firearm. By attaching a suppressor to your firearm, you’ll have the hearing safety benefits of over-ear hearing protection,  without sensory deprivation or the added bulk/weight on your head.

How quiet is a suppressed firearm?

This depends on the firearm and the suppressor. In most cases, the suppressed firearm will be at least as quiet as wearing a good pair of muffs.

Can I use one silencer for multiple firearms?

Yes. As long as the firearms are threaded in a way that will accept the silencer, you shouldn’t have any problems.

Can I use one silencer for multiple calibers?

You can use a larger caliber suppressor to suppress a smaller caliber firearm as long as you have the appropriate adapters. Using a larger caliber silencer is not as efficient as a silencer made for the specific caliber, but it will still be a significant sound reduction in most cases.

How will a silencer attach to my firearm(s)?

Once again, this depends on the firearm and the suppressor. The most popular methods include the following:
  • Some silencers will thread directly onto a threaded barrel
  • Some silencers require a quick-detach device (like a flash hider, muzzle brake or piston)
  • Some silencers are built into the firearm itself, providing an integral suppressor

What if my background check is taking longer than the average?

Several of our customers have successfully expedited their background checks by reaching out to their state representative or senator. Additionally, you can contact the FBI’s NICS Liaison at nicsliaison@fbi.gov or call the NFA Branch directly at: (304) 616-4500 to inquire about the status of your ATF NFA Form 4 background check. Keep in mind that these options are not guaranteed solutions and are only recommended if your approval process is exceeding the typical wait time. When emailing the NICS Liaison, it’s important to provide specific information, including your full name, Social Security Number (SSN), date of birth (DOB), state of residence, submission date, serial number, manufacturer, model name, item type (such as silencer, SBR, SBS, or machine gun), and the name of the transferor (Pew Pew Solutions or your local FFL). You can locate the manufacturer, model name, and serial number on your order receipt, customer profile, or the submission email from the ATF. Additionally, ensure that you mention Form ID: ATF Form 4 (5320.4) in your correspondence. Once they get your information, they’ll confirm you’re in the system and will probably give you an estimate for when to expect the approval. Remember that they don’t really know exactly when your transfer will be approved – so take the estimate for what it is. (In the past these estimates have been off dramatically, both long and short.)

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